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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS393578US | MESA-WATER-DISTRICT - Mesa Water District | 256 | — | 1 |
| AS54403US | EOA-WATR-01 - Essense of Australia, Inc. | 256 | — | 1 |
| AS393575US | PCSIA-3710 - Professional Computer Solutions, LLC | 256 | 1 | 2 |
| AS5733US | MONRO-1 - Monroe County | 256 | — | 1 |
| AS21635US | WWCUSA - World Wide Communications USA Inc. | 256 | — | 1 |
| AS399551US | MILLENNIUM-SYSTEMS-INC - Millennium Systems, Inc. | 256 | — | 1 |
| AS394626US | KUSI-SUBTAC001 - Kentucky Underground Storage, Inc. | 256 | 1 | 2 |
| AS393254US | DTG-LAS-VEGAS-MANAGER - DTG Las Vegas Manager, LLC | 256 | — | 1 |
| AS62751US | HSAUWC-AS - HSA-UWC | 256 | — | 1 |
| AS46397US | MOSES-ASN - Moses & Singer LLP | 256 | — | 1 |
| AS402114US | CYPRUSCU - CYPRUS CREDIT UNION INC. | 256 | — | 1 |
| AS64252US | LITE-PIPES - Lite Pipes Communications LLC | 256 | — | 1 |
| AS32657US | TENNESSEE-AQUARIUM - Tennessee Aquarium | 256 | — | 1 |
| AS207787US | ALLTHINGSTECH All Things Technology LLC | 256 | 1 | 2 |
| AS22531US | UDI-SMY-01 - United Distributors, Inc. | 256 | — | 1 |
| AS396127US | SUCCESS-ACADEMIES - Success Academy Charter Schools Inc. | 256 | — | 1 |
| AS395609US | COF-EQX-ASH-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS40213US | TOOELECO - Tooele County | 256 | — | 1 |
| AS401066US | LOWPING-US - LowPing | 256 | 2 | 3 |
| AS400417US | CIPC-CN-01 - Central Iowa Power Cooperative | 256 | — | 1 |
| AS32576US | LOANMART - 1-800LoanMart | 256 | — | 1 |
| AS6629US | NOAA-SILVERSPRING - National Oceanic and Atmospheric Administration | 256 | 1K | 2 |
| AS398062US | SPTA-1-AS-1 - Southeastern Pennsylvania Transportation Authority | 256 | — | 1 |
| AS11494US | KELLOGGCC - Kellogg Community College | 256 | — | 1 |
| AS395311US | MIDWAYUSA01 - MidwayUSA | 256 | — | 1 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS402361US | PEI-99 - Perry | 256 | — | 1 |
| AS402790US | HOSHINET - Walrus | 256 | — | 1 |
| AS53733US | JERICH-USA-INC - Jerich USA Inc. | 256 | — | 1 |
| AS395627US | CITY-OF-MONTGOMERY-AL - City of Montgomery | 256 | — | 1 |
| AS396070US | MOBISAL1 - Mobis Alabama, LLC | 256 | — | 1 |
| AS393700US | VANDHAM-SECURITIES - Wall Street Access | 256 | — | 1 |
| AS36774US | AS-36774 - Intuit Inc. | 256 | — | 1 |
| AS399298US | HEALTHAXIS-AS - HealthAxis Group, LLC | 256 | — | 1 |
| AS33669US | MEHARRY-I2 - Meharry Medical College | 256 | — | 1 |
| AS63418US | MAN-INVESTMENTS-US - Man Investments Holdings, Inc | 256 | — | 1 |
| AS30251US | FALKEN - Falken Tire Corporation | 256 | — | 1 |
| AS62784US | MIO-AS - MIO Partners, Inc. | 256 | — | 1 |
| AS40746US | OMI-ASN - Owensboro Messenger Inquirer | 256 | — | 1 |
| AS58202US | NoPKT NoPKT LLC | 256 | 4 | 5 |
| AS32749US | POTPOURRI-GROUP-INC - Potpourri Group Inc | 256 | — | 1 |
| AS394299US | ELLIOTT-ELECTRIC - Elliott Electric Supply Inc. | 256 | — | 1 |
| AS16508US | DESMOND - AEG | 256 | — | 1 |
| AS40240US | FCBOE - Fayette County Board of Education | 256 | — | 1 |
| AS202934US | MUNTEANU-AS SINCITY HOSTING LLC | 256 | 3 | 4 |
| AS16859US | NAPHCARE-INC - NaphCare, Inc. | 256 | — | 1 |